.School {
  display: flex;
  background: #ccc;
}
.nav_left ul li {
  width: 200px;
  height: 50px;
  line-height: 50px;
}
.nav_left {
  width: 20%;
  height: calc(100vh - 80px);
  /* border: 1px solid red; */
  text-align: center;
  background: #fff;
}
.nav_left ul li a {
  color: black;
}
.nav_right {
  width: 80%;
  height: calc(100vh - 80px);
  /* border: 1px solid green; */
  margin-left: 1rem;
  background: #fff;
  padding: 1rem;
}
.active {
  color: red !important;
  font-weight: bold;
}
